Python编程：trio模块异步/等待本地I/O库

github: https://github.com/python-trio/trio

文档： https://trio.readthedocs.io/en/latest/tutorial.html

An async/await-native I/O library for humans and snake people

安装

pip install trio

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代码示例

# -*- coding: utf-8 -*- import trio import time # 计时器 def timer(func): def inner(*args): start = time.time() ret = func(*args) end = time.time() print("{} time: {}".format(func.__name__, end - start)) return ret return inner ############## 同步执行 ###################### def sync_add(x, y): time.sleep(2) print("sync_add: {}".format(x + y)) def sync_multiply(x, y): time.sleep(2) print("sync_multiply: {}".format(x * y)) @timer def sync_func(): sync_add(1, 1) sync_multiply(1, 1) sync_func() ############## 异步执行 ###################### async def async_add(x, y): await trio.sleep(2) print("async_add: {}".format(x + y)) async def async_multiply(x, y): await trio.sleep(2) print("async_multiply: {}".format(x * y)) async def async_func(): async with trio.open_nursery() as nursery: nursery.start_soon(async_add, 1, 1) nursery.start_soon(async_multiply, 1, 1) @timer def run_async(): trio.run(async_func) run_async()

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执行结果

sync_add: 2 sync_multiply: 1 sync_func time: 4.00608491897583 async_multiply: 1 async_add: 2 run_async time: 2.0082740783691406

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参考

异步爬虫写起来太麻烦？来试试 Trio 吧！

Python

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